This __________, ________man was actually the ___________ manager the company ever had.

'the _______ manager the company ever had' is a comparison made against the past managers. Therefore both the words 'compassionate' and 'friendly' are incorrect, as they are not in a comparative form. Option A, although presents 'most able' as a superlative, contradicts it by mentioning the adjective 'ludicrous', which means 'foolish'. Option B is correct as it uses the most suitable set of superlative/ comparatives and adjectives.